/**
 * Project Name:JavaBaseReview
 * Package Name:com.xuwei.ext.netty.example
 * author:David
 * Date:2016年6月17日上午8:05:20
 * Copyright (c) 2016, xw123box@126.com All Rights Reserved.
 *
 */
package com.xuwei.ext.netty.example;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;

/**
 * Discards any incoming data
 * @author David
 * @since 2016年6月17日 上午8:05:20
 * @version 
 * @since JDK 1.6
 */
public class DiscardServer {
	
	private int port;
	
	public DiscardServer(int port){
		this.port = port;
	}
	
	public void run()throws Exception{
		EventLoopGroup bossGroup = new NioEventLoopGroup();
		EventLoopGroup workerGroup = new NioEventLoopGroup();
		try{
			ServerBootstrap b = new ServerBootstrap();
			b.group(bossGroup, workerGroup)
			 .channel(NioServerSocketChannel.class)
			 .childHandler(new ChannelInitializer<SocketChannel>(){
				@Override
				protected void initChannel(SocketChannel ch)
						throws Exception {
					ch.pipeline().addLast(new DiscardServerHandler());
				}
				
			 })
			 .option(ChannelOption.SO_BACKLOG, 128)
			 .childOption(ChannelOption.SO_KEEPALIVE, true);
			
			//Bind and start to accept incoming connections.
			ChannelFuture f = b.bind(port).sync();
			
			//Wait until the server socket is closed.
			//In this example, this does not happen,but you can do that gracefully
			//shut down your server
			f.channel().closeFuture().sync();
		}finally{
			workerGroup.shutdownGracefully();
			bossGroup.shutdownGracefully();
		}
	}

	public static void main(String[] args) throws Exception {
		int port;
		if(args.length>0){
			port = Integer.parseInt(args[0]);
		}else{
			port = 8080;
		}
		new DiscardServer(port).run();
	}


}
